Lid-supporter



C. AMBRUSTER.

LID SUPPORTI-IR.

APPLlcAloN HLEDVvNgAY 2, 1917.

Patented Feb. 8, 1921.

UNITED STTES CORNELIUS ALIIBRUSTER, OF ROSLYN, PENNSYLVANIA.

LDSUPORTER.

meneer.

Application filed May f3, 1917.

To all io/0m t may concern.'

Be it known that l, CORNELIUS Anuntis Tian, a 'citizen olf the United cStates, and a resident ot Roslyn, in the county ot Montgomery and `State ot .ljennsylvanizu have invented. a certain new and useful Lid-Supporter, of which the following is a specilication.

The principal object ot the present in vention is to provide a lid supporter ot which the parts shall be positively actuated and which, when the lid is opened and dropped a little, will hold it in open position and which will permit oi' the closing ot the lid by raising the lid a little and then closing it.

The invention will be claimed at the end hereof, but will be first described in connection 'with the accompanying drawings forming part hereof, and in which Figure 1, is a front view illustrating a lid supporter embodying features ot the invention.

Figs. 2 to 6 are side views illustrating another form ot lid supporter embodying features ot the invention in different positions.

Figs. 7 and 8 are a iront and an edge view ot one of the parts ot the lid supporter; and

Figs. 9 and 10 are like views oit the other part ot the supporter. I

.ln the drawings ais, tor e;a1nple,'a box or case such as might contain a phonograph and o is the lid which is hinged to the box or case as at c.

1 is a lid supporting arm pivoted to the lid as at 2 andV provided with a shoulder d. in Fig. 9, the pivot hole is marked 2a. 7 is a fixed supporting pin projeting from the part a, and upon which the shoulder i is yadapted to rest to hold the lid in normal open position. 5, is switch movable in respect to the shoulder Ll and having a cam surface 6 adapted to slide on the pin 7 and prevent the engagement or the shoulder d with the pin 7 to permit the lid to close. its shown the arm 1 and the switch 5 are pivoted together as at 8 so that they may work something like the blades ot a pair ot' scissors, but there is suiiicient friction in the pivot to retain them in any position in which they may be put, while at the same time affording them capacity for movement. ln Figs. 7 and 9, the pivot holes are marked 8a. There are cams for said arm and switch Specification of Letters Patent. Patented Feb, 8, 192L Serial No. 168,054.

whereby the latter is brought into switching position when the lid, after having been raised, is lowered into its normal supported position and again raised to its extreme position preparatory to closing it. These cams will now be described.

l'n F ig. l the wall of the generally oblong` put into switching position. l/Vhen the lid is' again raised, 5, the lower part 11 of the opening in the arm 1 in cooperation with the lower wedge-like part 1270i the opening-v in the switch produces a further scissor-like movement of the parts which brings the working tace 6 of the switch in front of the shoulder e and into position for slidingonthe -pin 7 when the lid is lowered to shut it.'

rThe wall 17 of the opening' in the switch,

operates to limit the movement of the switch and to assist in accurately positioning thetace 6. As the lid is closed, Fig. 6, the parts 1 and 5 are returned to their initial positions. The relative shape of the walls 18 and le ot the prolongations of the openings in the parts 1 and 5 in cooperation with theY pin 7 is a means for effecting this result in the construction shown in Figs. 2 to 10. Inl' the constru tion shown in F ig. 1, this is accomplished by the pins 7a and 15 upon one' of which, 15, the lett-hand wall of the switch bears and upon the other of which, 7a, the The conel inclined wall 16 ci the arm bears. struction shown in Fig. l, is as has been described in connection with the construe-ftion oi the other ligures, except that one wall, the right-hand one as shown in the drawings, ot ea: h of the openings in the respective members is omitted and as has been said the pin 15 is employed, acting on the 1zeit-hand wall oi' the switch.

Fig. 2 shows the arm and switch in the relative position which they occupy when the lid is closed. T he prolongations 13 and lll of the openings of each of the members are in alinement and the part 10 of the arm underlaps and extends beyond the wall of the opening in the switch. As the lid is raised to its highest position, Fig. 3, there is no relative movement ot the arm and switch,

but the pin 7 engages the shoulder 3 near the bottom part of the opening in the switch and so operates to limit the raising movement of the lid. When the lid is dropped, Fig. 4, the pin 7 working on the overlapping edges of the two parts l and 5 shifts them relatively abouttheir pivot S in such a way as to present the edges at the lower part of the openings in these two parts in overlapping relation preparatory to bringing the switch into active position. The lid, of course, is supported by the shoulder 4 and remains in open position. To close the lid it is first raised, F ig. 5, and this motion causes the pin i' to att upon the walls of the overlapping parts at the bottom of the openings shown in Fig. 4, and thus the parts are relatively shifted so that the wall 6 is made to overlie the shouldei1 4. As the lid is closed the part 6 slides on the pin and this prevents the shoulder 4 from rengaging the pin. Continued closing movementof the lid, Fig. 6, causes the pin 7 cooperating with the openings 18 and 14, or more accurately, with the walls thereof to return the parts to their initial position. From the foregoing description it is evident that the relative movements of the parts l and 5 are positive and not dependent upon' the action of gravity. l

lt will be evident that modiiications may be made in details ot construction and arrangement so that the invention is not limitedv as to those matters or otherwise than :is the state of the art and the appended claims may require.

lWhat I claim is:

1. An automaticlid support comprising the combination of a pivotal lid supporting arm having a shoulder, a fixed supporting pin upon whi h said shoulder is adapted to rest to hold the lid in normal open position, a switch pivoted to the arm and movable in respect to the shoulder and adapted to slide on said pin and prevent engagement oi' the shoulder with the pin lto permit the lid to close, cams for said arm and switch whereby the latter is positively brought into switching position to prevent engagement of the shoulder with the pin when the lid is lowered into its supported position and again raised preparatory to closing it, and a means acting on the switch for positively positioning it out ot' switching position as the lid is closed.

2. An automatic lid support comprising the combination of a fixed pin, a pivotal arm and a switch pivoted together andv each provided with a cam surface on which the piu works, the walls of said earn surtaces comprising a pin engaging shoulder for supporting the lid in open position, a cam tace adapted to overlie the shoulder and divert it from the pin, and two sets of cooperating cam faces adapted to cooperate with the pin, to put the switch into and out of switching position.

3. A lid support comprising the combina.- tion of alink connecting two hinged parts, as a box and its lid, said link comprising an arm attached to the one part having a cam surface which engages a pin attached to the other part, a shoulder upon said arm with which the said pin will engage when the hinged parts are open to prevent their immediate closing, an auxiliary part pivoted to the arm and which when the hinged parts are again further opened is shifted with respect to thearm so as to prevent the pin reengaging with the supporting shoulder, and so permits the hinged parts to be closed, and cam means for positively returning the arm and auxiliary part to their Original positional relation so as to permit the cycle to be repeated when the hinged parts are opened again.

4. ln a lid supporter the combination of a supporting pin, a shoulder adapted to engage with the pin, a single pivoted element constituting a switch adapted to cover and uncover the shoulder preventing and permitting engagement with the pin, and positively acting cam means provided on the shoulder and switch element for positively positioning the switch with relation to the shoulder during movement of the lid, substantially as described.

COBNELUS AMBRUSTER.

Witnesses T. L. HAMMERSLEY,

J W. ACHARD. 

